我跌倒在路上，擦伤了膝盖和双手，但是伤得不重，车子也没撞坏。
The fall onto the road grazed my knees and hands, but too not badly.
如果膝盖不犯毛病的话，他也会慢跑，但多数时间他都是在跑步机上以每小时4.4英里的速度进行缓坡走练习。
He jogs if his knee doesn't bother him, but most often he walks on the treadmill at a speed of 4.4 miles per hour with a slight incline.
他的左腿膝盖以下部分也已经被砸碎了。
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